Trait integration varies with resource acquisition strategies in a common perennial crop

作者：Adam R. Martin, Lauren A. Miller, Mitchell Madigan, Boya Cui, Kimberley A. Cathline, Gavin Robertson · 发表于：Functional Ecology · 年份：2025 · DOI：10.1111/1365-2435.70013 · 被引用次数：5 · 研究领域：Forest ecology and management、Agroforestry and silvopastoral systems、Plant Water Relations and Carbon Dynamics

Abstract Resource‐acquisitive plant species are expected to show stronger trait integration versus resource‐conservative species, due to simultaneous selection for multiple resource requirements including light, water and nutrients. While this hypothesis has been invoked to predict interspecific differences in trait variation and integration, it has not been tested to explain intraspecific trait variation (ITV) and trait integration among varieties of crop species. We quantified nine leaf physiological, water‐use, chemical and morphological traits related to the acquisition and use of light, CO 2 , water and nutrients, across six varieties of wine grapes ( Vitis vinifera L.), in order to quantify the extent of ITV and trait integration among one of the world's most common and economically important perennial crops. This dataset was also used to test the hypothesis that, within a crop species, resource‐acquisitive varieties express stronger trait integration than resource‐conservative varieties. All leaf traits varied significantly across wine grape varieties and formed an intraspecific resource‐acquisitive–resource‐conservative axis of variation within wine grapes. Consistent with hypotheses on trait variation and integration, wine grape varieties expressing resource‐acquisitive trait syndromes were associated with stronger trait integration versus those expressing resource‐conservative trait syndromes. Specifically, varieties expressing greater values of light‐saturated phot...